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  <title>返回所有可用的SPL类</title>
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  <div id="layout-content"><div id="function.spl-classes" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">spl_classes</h1>
  <p class="verinfo">(PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">spl_classes</span> &mdash; <span class="dc-title">返回所有可用的SPL类</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.spl-classes-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>spl_classes</strong></span>(): <span class="type">array</span></div>

  <p class="para rdfs-comment">
   本函数返回当前所有可用的 SPL 类的数组。
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.spl-classes-parameters">
  <h3 class="title">参数</h3>
  <p class="para">此函数没有参数。</p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.spl-classes-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns an <span class="type">array</span> containing the currently available SPL classes.
  </p>
 </div>

 
 <div class="refsect1 examples" id="refsect1-function.spl-classes-examples">
  <h3 class="title">范例</h3>
  <p class="para">
   <div class="example" id="example-3671">
    <p><strong>示例 #1 <span class="function"><strong>spl_classes()</strong></span> example</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000">
<span style="color: #0000BB">&lt;?php<br /><br />print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">spl_classes</span><span style="color: #007700">());<br /><br /></span><span style="color: #0000BB">?&gt;</span>
</span>
</code></div>
    </div>

    <div class="example-contents"><p>以上例程的输出类似于：</p></div>
    <div class="example-contents screen">
<div class="cdata"><pre>
Array
(
    [ArrayObject] =&gt; ArrayObject
    [ArrayIterator] =&gt; ArrayIterator
    [CachingIterator] =&gt; CachingIterator
    [RecursiveCachingIterator] =&gt; RecursiveCachingIterator
    [DirectoryIterator] =&gt; DirectoryIterator
    [FilterIterator] =&gt; FilterIterator
    [LimitIterator] =&gt; LimitIterator
    [ParentIterator] =&gt; ParentIterator
    [RecursiveDirectoryIterator] =&gt; RecursiveDirectoryIterator
    [RecursiveIterator] =&gt; RecursiveIterator
    [RecursiveIteratorIterator] =&gt; RecursiveIteratorIterator
    [SeekableIterator] =&gt; SeekableIterator
    [SimpleXMLIterator] =&gt; SimpleXMLIterator
)
</pre></div>
    </div>
   </div>
  </p>
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